In a league filled with superstar starting pitchers, it's a Milwaukee Brewers reliever who has quietly become the winningest arm in all of Major League Baseball. Aaron Ashby—a left-handed bullpen weapon—is off to a historic start in 2026, posting a perfect 7-0 record through just 25 innings of work. That's right: the most wins by any pitcher in the big leagues belongs to a reliever.

Ashby's numbers are nothing short of dominant. Over those 25 innings, he's posted a stellar 2.16 ERA, racked up 38 strikeouts, and allowed only six earned runs. His 0.7 WAR currently leads all relievers, and he's become the kind of high-leverage arm every team dreams of having in tight, late-game situations. In an era where bullpens are more important than ever, Ashby is proving that relief pitchers can be just as valuable as any ace.

But it hasn't been all smooth sailing. According to Baseball Savant, Ashby's max exit velocity sits at 116.9 MPH—ranking in the bottom 1% of all pitchers. That means when batters do make contact, they're hitting the ball hard. So far, though, he's managed to limit the damage, and his ability to miss bats has kept him out of trouble.

The Brewers find themselves in a tight race in the National League Central, sitting 4.5 games back in a division that's quickly becoming one of baseball's toughest. With the Chicago Cubs and Cincinnati Reds both surging, Milwaukee will need Ashby to keep up his remarkable start if they hope to close the gap and make a postseason push. For a team built on pitching, having the winningest pitcher in baseball—even if he comes out of the bullpen—is a huge advantage.